Method for applying comminuted material to surfaces



Nov. 9, 1943. w. E. MacKlNNEY METHOD FOR APPLYING COMMINUTED MATERIAL TO SURFACES Filed Nov. 26, 1940 Patented Nov. 9, 1943 METHOD FOR APPLYING COMMINUTEI) MATERIAL 'ro SURFACES Wallace E. MacKinney, Oak Park, In. Application November 20, 1940, Serial No. 366,368

2 Claims. (01. 117-25) The invention relates toa method for applying comminuted material to surfaces and has for its primary object the provision of a simple v and improved method for the purpose indicated which are highly efficient in use.

Other objects will appear hereinafter.

The invention consists of the combinations and arrangements of parts hereinafter described and I claimed.

The invention will be best understood by referonce to the accompanying drawing forming a part of this specification and in which Fig. 1 is a partial top plan view of apparatus embodying the invention;

Fig. 2 an enlarged vertical section thereof taken substantially online 22 of Fig. 1;

Fig. 3 a section taken substantially on line 3-3 of Fig 1; i

Fig. 4 a detailed section takensubstantially,

on line 44 of Fig. l; and i Fig. 5 a partial plan view of a sheet of mate rial in an intermediate step of production.

arranged as shown on the support It! and positioned between the stop pins II. Suitable comminuted material of different colors is supplied to the trays I5, I6, and I! the same being preferably supplied in the form of piles 25 in the Then the group of trays is ends of said trays. shifted to the right of the positions shown in Fig. 1 until the stops 22 and 23 are encountered which will bring the discharge openings I8 directly over the coated sheet I2 and in proper registration therewith. Then a scraper 26 has its lower end placed in the pile 25 and drawn quickly The embodiment of the invention illustrated in I the drawing comprises a suitable support II) which may be in the form of a table top having positioning pins or stops II arranged thereon to serve as guides and stops for positioning a sheet I2 of roofing material or the like in definite relation on said support as indicated in Fig. l. A sheet I2 is provided with a coating I3 .of adhesive material extending over the top thereof. Parallel guides M are arranged as indicatedon the support III and three receptacles or traysIE,

I 6, and Ilare arranged in said guides and secured to each other so as to form ashiftable carriage on said support. The trays I5; I6. and

and 29, said openings being arranged as indicated on the definite patterns, the openings in one receptacle being out of relative registration with those in the others. A stop'lever 2'I is arranged as shown on the support I0 and is equipped with stop pins 22 and 23 projecting upwardly through suitable openings in the support andin proper relation to serve as stops for the trays I5, I6, and I! to position the same over the sheet I2 in proper registration therewith. Suitable recesses or pockets 24 are provided in the bottoms of the trays I5 and I6 in positions to receive the pins 22 and 23 to stop and position the trays I9 and 20 also in proper registration with sheet I2. I

In use and operation the sheet I2 having its upper surface given a coating I3 of adhesive is said piles of material and whereby the edges of I! are provided respectively in their bottoms with discharge openings or perforations I8, I9,

secured in place as will be readily understood. v

across the-bottom of receptacle I5 which will cause the flow or deposit of piles of the comminuted material upon the coated surface of the sheet I2 aswillbe readily understood. Then the lever 2| is depressed, the bank of trays moved to the right until the pins 22 and 23 are engaged with the openings or sockets in the bottom of trayoli's, in which position the openings I9 in tray I6 will be in proper registration with the f;.surfaceof sheet l2 and over spaces between the piles of material already deposited from tray I5;

Then the scraper I6 is again employed as before to deposit piles of material from trays I6. Then the same manipulation is repeated for tray I! to deposit piles of material from the openings 20.

In Fig. ,5 I have illustrated diagrammatically the piles of material thus deposited in. definite patterned arrangement, the piles deposited from 7 tray la being number Is, those from tray I6 numbered I9, and those from tray I'I number ,20' as indicated. When this has been done the sheet I2 is removed and agitated or shaken to cause uniform spreading and distribution of the said piles will be caused to meetand intermingle slightly but a level surface for the sheet I'Z thus" obtained. In this way a definite colored pattern.

will be imparted to the comminuted material on said sheet. When the adhesive sets or hardens the comminuted material will be permanently If desired an additional coating of adhesive and/or waterproofing material may then be appliedto finish the sheet. Obviously by changing the arrangement of the openings in the botchanged as and when desired. 7 While I have illustratedand described without departing from the spirit thereof. I

therefore do not wish to be limited to theprecise the pre-- ferred method for carrying on the invention, these are capable of variation and modification I spaced relation to each other; and then agitating said surface while leaving the upper particles in said piles free to flow in all directions to cause; 7 spreading of said piles in all directions and intermingling of the particles at the edges thereof.

2. The method set forth in claim 1 in which. 7 the comminuted materials are of difierent colors and arranged in definite patterns.

WALLACE E. MACKINNEY. 

